From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58F4AC432BE for ; Mon, 23 Aug 2021 16:14:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 41C6E613D1 for ; Mon, 23 Aug 2021 16:14:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229862AbhHWQOw (ORCPT ); Mon, 23 Aug 2021 12:14:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54346 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229477AbhHWQOv (ORCPT ); Mon, 23 Aug 2021 12:14:51 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2045C061575; Mon, 23 Aug 2021 09:14:07 -0700 (PDT) Date: Mon, 23 Aug 2021 18:14:01 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1629735243; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5TGqeZzme/VeIRQngMgDyP5V2bB9RF2o4O2Q2EpI5fs=; b=zdxklKf1t3vUeK0iHrIyr2J7Gx4qdLJRu8MhNvYPsZsyWyitSKLMWc6JCXBT2gIYW7mp8t EnEZGaQDUonijqDO4CPMzs425lwfb/+bEH1qQaBoiMyXAsaNz5j7OecF3QOKg9MCdZDqlf KuiLobWJfR3xctTsqlQNB2eJ/LKFSB2jDvsrBsYuyg09dptfWqBYojMh/0NGaPgYfTrLVT RJfnP3HqDv3wxbf9M6+GwwCJVz6xd4GavDlB1LVloyASlVoF9BLHeWGxrBupsmbUmDnbfV tvlTS+F/DajM4XkDF3RSfuSPB8Hj0xRku7qgZY8QotCvRK5ev/2wHE2tWGLKeA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1629735243; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5TGqeZzme/VeIRQngMgDyP5V2bB9RF2o4O2Q2EpI5fs=; b=7FXYXy05/5pwO89Qoo+bjcBlrE2ri8yo+vfEZLh6jWElo/6wBzwMftmx+z5eSLFZ2LWlst 0v9qf5YPaw9wGXAw== From: Sebastian Andrzej Siewior To: Jeaho Hwang Cc: Peter Chen , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Thomas Gleixner , linux-rt-users@vger.kernel.org, Linux team , =?utf-8?B?67OA66y06rSRKEJ5ZW9uIE1vbyBLd2FuZykv7J6Q64+Z7ZmU7JewKUF1dG9t?= =?utf-8?B?YXRpb24gUGxhdGZvcm3sl7DqtaztjIA=?= , =?utf-8?B?7LWc6riw7ZmNKENob2kgS2kgSG9uZykv7J6Q64+Z7ZmU7JewKUF1dG9tYXRp?= =?utf-8?B?b24gUGxhdGZvcm3sl7DqtaztjIA=?= Subject: Re: [PATCH v2] usb: chipidea: local_irq_save/restore added for hw_ep_prime Message-ID: <20210823161401.ix6l33o3sja7sy45@linutronix.de> References: <20210817095313.GA671484@ubuntu> <20210818161752.vu6abfv3e6bfqz23@linutronix.de> <20210819084759.stnmit32vs2be46m@linutronix.de> <20210821050511.GA14810@Peter> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2021-08-21 16:04:01 [+0900], Jeaho Hwang wrote: > 2021=EB=85=84 8=EC=9B=94 21=EC=9D=BC (=ED=86=A0) =EC=98=A4=ED=9B=84 2:05,= Peter Chen =EB=8B=98=EC=9D=B4 =EC=9E=91=EC=84=B1: > > > HI Peter. >=20 > We configured the kernel as "low latency desktop" and added > "threadirqs" inside the cmdline parameter. > Then udc irq handler runs as a thread and shows no suspicious working. > I Hope It will help. May I again point out that since commit 81e2073c175b8 ("genirq: Disable interrupts for force threaded handlers")= = =20 the threaded handler runs with disabled interrupts. This time more verbose. It is available since v5.12-rc4 but it has been also applied for stable. > Thanks. Sebastian